What Are the Key Specifications of 12V 100Ah LiFePO4 Car Batteries?
A 12V 100Ah LiFePO4 car battery features a nominal voltage of 12.8V, 100Ah capacity, and delivers 1280Wh of energy. It weighs 22–27 lbs, supports 2000–6000+ cycles, operates from -20°C to 60°C, and includes a built-in 100A BMS for overcharge, overdischarge, and thermal protection. Redway ESS ensures robust, maintenance-free, and lightweight power for automotive, RV, marine, and off-grid systems.
How much energy and power does a 12V 100Ah LiFePO4 car battery deliver?
A 12V 100Ah LiFePO4 battery provides 1280Wh (1.28kWh) of energy, supporting up to 1280W continuous output (1C discharge). This makes it suitable for high-demand automotive, RV, and marine applications, with stable voltage and high efficiency even under heavy loads.
Chart: Core Electrical Specifications
| Parameter | Value |
|---|---|
| Nominal Voltage | 12.8V |
| Rated Capacity | 100Ah |
| Energy | 1280Wh |
| Max. Continuous Output | 1280W (1C) |
| Max. Charge Voltage | 14.4V ± 0.2V |
| Max. Charge/Discharge | 100A |
| Peak Discharge (1–5s) | 280–400A |
What is the typical cycle life and lifespan of a 12V 100Ah LiFePO4 battery?
High-quality 12V 100Ah LiFePO4 batteries, such as those from Redway ESS, LiTime, and EcoFlow, offer 2000–6000+ cycles depending on depth of discharge (DOD). At 80% DOD, expect 4000–6000 cycles and a lifespan of 8–15 years, far surpassing lead-acid batteries.
What are the operating and storage temperature ranges?
These batteries operate reliably from -20°C to 60°C (-4°F to 140°F) for discharge and 0°C to 50°C (32°F to 122°F) for charging. Storage is safe between -10°C and 50°C (14°F to 122°F). Redway ESS and other top brands include low/high temperature protection for safe performance in all climates.
How much does a 12V 100Ah LiFePO4 battery weigh and what are its dimensions?
A typical 12V 100Ah LiFePO4 battery weighs 22–27 lbs (10–12.5 kg), making it 50–70% lighter than lead-acid equivalents. Dimensions are compact, with common sizes around 13 × 6.8 × 8.5 inches (Group 31), or even smaller for “mini” models. This lightweight, compact design is ideal for automotive and mobile use.
What protection features are included in modern LiFePO4 car batteries?
A built-in 100A Battery Management System (BMS) provides:
-
Overcharge/overdischarge protection
-
Overcurrent and short circuit protection
-
High/low temperature cut-off
-
Cell balancing for long life
-
Low self-discharge (≈3% per month)
-
IP65–IP67 waterproof/dustproof ratings (varies by brand)
Redway ESS’s advanced BMS ensures maximum safety and reliability.
Chart: Key Safety Features
| Protection Type | Function |
|---|---|
| Overcharge/Overdischarge | Prevents cell damage |
| Overcurrent/Short Circuit | Cuts off current to avoid hazards |
| High/Low Temp Protection | Stops charge/discharge in unsafe temps |
| Cell Balancing | Maintains even cell voltage |
| Waterproof/Dustproof | IP65–IP67 enclosure (brand dependent) |
What certifications and standards do top 12V 100Ah LiFePO4 batteries meet?
Leading brands like Redway ESS, LiTime, and EcoFlow meet UL, CE, RoHS, UN38.3, and IEC62619 standards. These certifications ensure batteries are safe for automotive, marine, and energy storage use, and are compliant with international transport and safety regulations.
Can 12V 100Ah LiFePO4 batteries be used in series or parallel?
Yes, most models support up to 4 in series (for 24V, 36V, or 48V systems) and up to 4 in parallel for higher capacity (e.g., 400Ah at 12V). Redway ESS and LiTime batteries are designed for flexible system expansion, making them suitable for RVs, solar storage, and off-grid power.
What are the main advantages over lead-acid batteries?
-
2–3 times lighter and more compact
-
4–10 times longer lifespan (8–15 years)
-
5–10 times more cycles (2000–6000+)
-
100% usable capacity (deep discharge without damage)
-
No maintenance, no acid or corrosion
-
Fast charging (up to 5x faster)
-
Low self-discharge, ready after months of storage
Redway ESS Expert Views
“A 12V 100Ah LiFePO4 car battery is the gold standard for modern vehicles, RVs, and energy storage. Redway ESS delivers advanced BMS, robust safety, and long cycle life, making our batteries a reliable, maintenance-free upgrade over lead-acid in any application.”
Conclusion
12V 100Ah LiFePO4 car batteries offer 12.8V nominal voltage, 100Ah capacity, 1280Wh energy, and 2000–6000+ cycles. Weighing just 22–27 lbs, they feature advanced BMS protection, operate from -20°C to 60°C, and are maintenance-free. Redway ESS and other top brands set the benchmark for safe, efficient, and long-lasting automotive power.
FAQs
How long will a 12V 100Ah LiFePO4 car battery last?
Expect 8–15 years or 2000–6000+ cycles, depending on usage and DOD.
Is a 12V 100Ah LiFePO4 battery suitable for engine starting?
Some models are designed for starting; check CCA rating. Most are ideal for deep-cycle and auxiliary use.
What protection features should I expect?
A built-in BMS for overcharge, overdischarge, overcurrent, temperature, and short circuit protection.
Can I use these batteries for solar or RV applications?
Yes, 12V 100Ah LiFePO4 batteries are perfect for RVs, solar, marine, and backup power systems.